The journey ahead will be a long one - adoption is still a far-off prospect, as Bo's medical needs are still being assessed. But Bo is no longer anonymous. He will have all the company in the world on this road.

Much of that thanks to a 22-year-old who decided this dog's journey would not end on a busy road.

"Most people would have just left the dog in the road," O'Sullivan says. "And I'm sure many people did leave the dog in the road. But [Rodriguez] really is a hero.

"He picked up an unknown, strange adult dog, put the dog in his car and not only drove the dog to the emergency vet but took sole responsibility for him in the hope that people would stand up."

And the amazing thing is, people did. "It was nothing short of a miracle to pull it off," O'Sullivan says.